EXTRACTION PROCESS OF POLYSACCHARIDES FROM SECHIUM EDULE
The heat extraction process of polysaccharides from Sechium edule (Jacq.) Swartz was optimized by response surface methodology. Based on single factor test, a 3-factor, 3-level Box-Behnken experiment was adopted including dependent variables (extraction temperature, liquid to materials, extraction time). Results showed that the optimal extraction conditions of polysaccharides were followed as extraction temperature of 81℃, liquid-to-material ratio of 20 mL·g-1, extraction time of 138 min. The yield of polysaccharides could be up to 2.775% under the optimal extraction condition, the relative error was 0.57% compared to the predictive value which indicated that the feasible model fitted well with the experimental data, and the conditions were reasonable and feasible.
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